Open
Cached
·
just now
88/100
SECURITY SCORE
Certificate Information
Subject
C=US, ST=Florida, O=The Dun & Bradstreet Corporation, CN=*.d41.co
Issuer
C=US, O=Corporation Service Company, CN=Corporation Service Company RSA OV SSL CA 2
Valid From
December 15, 2025
Valid Until
January 15, 2027
278 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
AA:81:3A:07:F5:FA:06:77:E0:7C:FB:6F:06:80:13:5A:3C:D2:05:48:DB:1E:0C:5D:CD:F3:A0:FB:6A:27:23:62
Alternative Names
Security Configuration
TLS Protocols
TLS 1.2
Forward Secrecy
Limited
(Check cipher configuration)
Warnings
- • TLS 1.3 is not supported (recommended)
HTTP Security Headers
Status
Strict-Transport-Security
Good
max-age=31536000; includeSubDomains
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Good
no-referrer-when-downgrade
Permissions-Policy
Missing
Not configured
Recommendations
- • Consider adding 'preload' to HSTS for maximum security
- • Add X-Content-Type-Options: nosniff
- • Consider adding Permissions-Policy to control browser features
CAA Records (Certificate Authority Authorization)
CAA Records
Not Configured
(Any CA can issue certificates)
CAA Issues
- • No CAA records configured - any CA can issue certificates
Recommendations
- • Implement CAA records to restrict which CAs can issue certificates for your domain
- • This adds an extra layer of security against unauthorized certificate issuance
- • Example: Add CAA record 'example.com. CAA 0 issue "letsencrypt.org"'
- • Consider adding 'iodef' record to receive security incident reports